Definition of nucleus

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Nucleus (n.) A kernel; hence, a central mass or point about which matter is gathered, or to which accretion is made; the central or material portion; -- used both literally and figuratively..

Lern More About Nucleus

Nucleus :: Nucleus (n.) The body or the head of a comet.
Nonnucleated :: Nonnucleated (a.) Without a nucleus.
Perinuclear :: Perinuclear (a.) Of or pertaining to a nucleus; situated around a nucleus; as, the perinuclear protoplasm..
Cytoblast :: Cytoblast (n.) The nucleus of a cell; the germinal or active spot of a cellule, through or in which cell development takes place..
Nucleiform :: Nucleiform (a.) Formed like a nucleus or kernel.
D8gregarin91 :: d8Gregarin91 (n. pl.) An order of Protozoa, allied to the Rhizopoda, and parasitic in other animals, as in the earthworm, lobster, etc. When adult, they have a small, wormlike body inclosing a nucleus, but without external organs; in one of the young stages, they are amoebiform; -- called also Gregarinida, and Gregarinaria..
Nucleus :: Nucleus (n.) An incipient ovule of soft cellular tissue.
Endoplast :: Endoplast (n.) See Nucleus.
Indogenide :: Indogenide (n.) Any one of the derivatives of indogen, which contain that group as a nucleus..
Tercine :: Tercine (n.) A cellular layer derived from the nucleus of an ovule and surrounding the embryo sac. Cf. Quintine.
Nucleate :: Nucleate (a.) Having a nucleus; nucleated.
Gymnocyte :: Gymnocyte (n.) A cytode without a proper cell wall, but with a nucleus..
Umbra :: Umbra (n.) The central dark portion, or nucleus, of a sun spot..
Karyomiton :: Karyomiton (n.) The reticular network of fine fibers, of which the nucleus of a cell is in part composed; -- in opposition to kytomiton, or the network in the body of the cell..
Intranuclear :: Intranuclear (a.) Within the nucleus of a cell; as. the intranuclear network of fibrils, seen in the first stages of karyokinesis..
Coma :: Coma (n.) The envelope of a comet; a nebulous covering, which surrounds the nucleus or body of a comet..
Pentamethylene :: Pentamethylene (n.) A hypothetical hydrocarbon, C5H10, metameric with the amylenes, and the nucleus of a large number of derivatives; -- so named because regarded as composed of five methylene residues. Cf. Trimethylene, and Tetramethylene..
Met- :: Met- () That two replacing radicals, in the benzene nucleus, occupy the relative positions of 1 and 3, 2 and 4, 3 and 5, 4 and 6, 5 and 1, or 6 and 2; as, metacresol, etc. See Ortho-, and Para-..
Thionaphthene :: Thionaphthene (n.) A double benzene and thiophene nucleus, C8H6S, analogous to naphthalene, and like it the base of a large series of derivatives..
Karyoplasma :: Karyoplasma (n.) The protoplasmic substance of the nucleus of a cell: nucleoplasm; -- in opposition to kytoplasma, the protoplasm of the cell..
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